X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/2ca99a0dceb4101f1ecaff0348b1684cb975099c..cce08fb5aca7dd01706cecea845b183dc62b1717:/apt-pkg/tagfile.cc

diff --git a/apt-pkg/tagfile.cc b/apt-pkg/tagfile.cc
index 040562fff..85e6abfd7 100644
--- a/apt-pkg/tagfile.cc
+++ b/apt-pkg/tagfile.cc
@@ -11,10 +11,6 @@
    ##################################################################### */
 									/*}}}*/
 // Include Files							/*{{{*/
-#ifdef __GNUG__
-#pragma implementation "apt-pkg/tagfile.h"
-#endif
-
 #include <apt-pkg/tagfile.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
@@ -59,19 +55,52 @@ pkgTagFile::~pkgTagFile()
    delete [] Buffer;
 }
 									/*}}}*/
+// TagFile::Resize - Resize the internal buffer				/*{{{*/
+// ---------------------------------------------------------------------
+/* Resize the internal buffer (double it in size). Fail if a maximum size
+ * size is reached.
+ */
+bool pkgTagFile::Resize()
+{
+   char *tmp;
+   unsigned long EndSize = End - Start;
+
+   // fail is the buffer grows too big
+   if(Size > 1024*1024+1)
+      return false;
+
+   // get new buffer and use it
+   tmp = new char[2*Size];
+   memcpy(tmp, Buffer, Size);
+   Size = Size*2;
+   delete [] Buffer;
+   Buffer = tmp;
+
+   // update the start/end pointers to the new buffer
+   Start = Buffer;
+   End = Start + EndSize;
+   return true;
+}
+
 // TagFile::Step - Advance to the next section				/*{{{*/
 // ---------------------------------------------------------------------
-/* If the Section Scanner fails we refill the buffer and try again. */
+/* If the Section Scanner fails we refill the buffer and try again. 
+ * If that fails too, double the buffer size and try again until a
+ * maximum buffer is reached.
+ */
 bool pkgTagFile::Step(pkgTagSection &Tag)
 {
-   if (Tag.Scan(Start,End - Start) == false)
+   while (Tag.Scan(Start,End - Start) == false)
    {
       if (Fill() == false)
 	 return false;
       
-      if (Tag.Scan(Start,End - Start) == false)
+      if(Tag.Scan(Start,End - Start))
+	 break;
+
+      if (Resize() == false)
 	 return _error->Error(_("Unable to parse package file %s (1)"),
-			      Fd.Name().c_str());
+				 Fd.Name().c_str());
    }
    Start += Tag.size();
    iOffset += Tag.size();